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Solve Grade 5 math problem on pages 105, 106 of VBT Volume 2, Triangle Area, Exercise 86 providing detailed program-based solutions for exercises 1, 2, 3 as per curriculum. Students are encouraged to refer to gain better understanding of the triangle area formula and how to apply it to solve problems.
Solve Grade 5 math problem on pages 105, 106 of VBT Volume 2, Triangle Area, Exercise 86
1. Solve Exercise 1 - Math Exercise Book Grade 5 Volume 2 Page 105
Problem Statement:
Write the continuation:
To calculate the area of a triangle, we take ..................................
Solution Method:
To find the area of a triangle, multiply the length of the base by the height (using the same unit of measurement), then divide by 2.
Answer
To calculate the area of a triangle, multiply the length of the base by the height (using the same unit of measurement), then divide by 2.
2. Solve Exercise 2 - Math Exercise Book Grade 5 Volume 2 Page 105
Problem Statement:
Complete the blanks appropriately:
a) The area of a triangle with a base length of 7cm and a height of 4cm is: ...
b) The area of a triangle with a base length of 15m and a height of 9m is: ...
c) The area of a triangle with a base length of 3.7dm and a height of 4.3dm is: ...
Solution Method
To calculate the area of a triangle, multiply the length of the base by the height (using the same unit of measurement), then divide by 2.
Answer
a) The area of a triangle with a base length of 7cm and a height of 4cm is:
7 x 4 : 2 = 14 (cm2)
b) The area of a triangle with a base length of 15m and a height of 9m is:
15 x 9 : 2 = 67.5 (m2)
c) The area of a triangle with a base length of 3.7dm and a height of 4.3dm is:
3.7 x 4.3 : 2 = 7.955 (dm2)
3. Solve Exercise 3 - Math Exercise Book Grade 5 Volume 2 Page 106
Problem Statement:
Given a rectangle with a length of 13.5m and a width of 10.2m. Calculate the area of triangle EDC
Method of Solution
- The base length of triangle EDC is equal to the length DC of rectangle ABCD and is 13.5m.
- The height EH of triangle EDC is equal to the width of rectangle ABCD and is 10.2m.
To calculate the area of triangle, multiply the length of the base by the height (using the same unit of measurement), then divide by 2.
Answer
The length of the base of triangle EDC is equal to the length DC of rectangle ABCD and is 13.5m.
The height EH of triangle EDC is equal to the width of rectangle ABCD and is 10.2m.
The area of triangle EDC is:
13.5 x 10.2 : 2 = 68.85 (m2)
The answer is: 68.85m2.
Above is the guidance for solving Math Exercise Book Grade 5 Volume 2 Page 105,106 Triangle Area, Exercise 86. You are invited to continue with guidance on solving Grade 5 math problems on pages 106, 107, 108 of VBT Volume 2 Practice, Exercise 87 or view solving Grade 5 math problems on pages 104,105 of VBT Volume 2 to reinforce previous lesson knowledge.
